v-6 in early A-body
my mistake for saying flywheel instead of flex plate, thinking OP's 833 while talking about Grissoms comment about 904 not working. Anyway...Kit, there is no need to apologize, here are more pics, flex plate on 5.9 and an old 6 cyl magnum flywheel from scrap pile, by looks of reluctor notches I would guess 4.0L Jeep due to weird spacing of trigger points, 3.9L would be evenly spaced as are 5.2/5.9. Sounds like you have a great understanding of ignition and injection. The Magnum stuff is pretty basic. PM or call if you have any questions about the factory injection.